<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        /* @media (width: 375px) {
            body{
                background-color: green;
            }
            html{
                font-size: 37.5px;

            }

        }
        @media (width: 320px) {
            body{
                background-color: red;
            }
            html{
                font-size: 32px;
            }
        }
        @media (width: 414px) {
            body{
                background-color: pink;
            }
            html{
                font-size: 41.4px;
            }
        } */
        .box{
            width: 5rem;
            height: 3rem;
            background-color: rgb(139, 139, 139);

        }
    </style>
</head>
<body>
    <div class="box"></div>

    <script src="./js/flexible.js"></script>

</body>
</html>